US1638572A - Antioffset mechanism for printing presses - Google Patents

Antioffset mechanism for printing presses Download PDF

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Publication number
US1638572A
US1638572A US12842A US1284225A US1638572A US 1638572 A US1638572 A US 1638572A US 12842 A US12842 A US 12842A US 1284225 A US1284225 A US 1284225A US 1638572 A US1638572 A US 1638572A
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United States
Prior art keywords
sheet
web
roll
carrier
offset
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US12842A
Inventor
Richard J Greenway
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CB Cottrell and Sons Co
Original Assignee
Individual
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Publication date
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Priority to US12842A priority Critical patent/US1638572A/en
Application granted granted Critical
Publication of US1638572A publication Critical patent/US1638572A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/06—Powdering devices, e.g. for preventing set-off

Definitions

  • the object .of-my invention is to provide certain improvements in the construc- 18 the freshly printed side of the sheet or web;.
  • said-elements including a traveling endless .belt arranged for contact (preferably ex-' tended contact) with the sheet or web while on its carrier, means being employed for applying the anti-offset powder in regulable quantities to the endless belt for transfer.
  • Fig. 2 represents a longitudinal vertical section through the same.
  • the rotary carrier is herein shown as a sheet carrying cylinder 1, provided with sheet grippers 2, the shaft 3 of which cylinder is suitably mounted in the frame 4.
  • the endless belt 5 passes around the drive roll 6, the idler roll 7 and the belt tightener roll 8 and underneath thebfl'set powder applying roll 9. These rolls are all suitably mounted in the frame 4 and the rolls 7 and 8 are so arranged as to cause'the endless belt 5 to have an extended contact with the freshly printed side of the sheet on the carrier.
  • the anti-oflset'powder supply fountain is denoted by 10 and its roll 11 is arranged in position to transfer the anti-offset powder to the roll 9, which latter roll is provided with a cover of fabric, such, for instance as felt, pile fabric and the like.
  • An adjustable doctor knife 12 is mounted 'in the fountain 10 imposition to regulate the printed side of the amountof anti-offset powder Jtaken b the fountain roll 11 for transfer to the, abr ic covered roll 9.
  • Thisroll 9 applies the antiinvention; hence, I
  • a rotary carrier for a freshly printed sheet or web a traveling endless belt arranged for extended contact with the sheet or web while on the carrier, an anti-offset powder supply fountain, a fountain roll, and
  • a rotary carrier for a freshly printed sheet or web a traveling endless belt arranged for contact with the sheet orweb while on the carrier, an anti-offset powdersupply fountain, a fountain roll,and a faba fabric covered roll engaged thereby for applying the anti-offset powder to the belt for transfer thereby onto the freshly printed outer side of the sheet or web, the carrier, belt and rolls being driven at the same surface speed.

Description

A n I ug I R. J. GREENWAY ANTI-OFFSET MECHANISM FOR PRINTING PRESSES Filed March 5} 1925 ATTORNEYS Patented Aug. 9, 1927. I
UNITED STATES PATENT OFFICE.
RICHARD GREENWAY, ,OF WESTERLY, RHODE ISLAND, ASSIGNOR TO 0. B. COTTRELL '& SONS COMPANY, OF STONINGTON, CONNECTICUT, A CORPORATION OI DELA- wann ANTIOFFSIiZT MECHANISM FOR PRINTING PRFSS ES.
Applleation flled March 3, 1925. Serial No. 12.842.
The object .of-my invention is to provide certain improvements in the construc- 18 the freshly printed side of the sheet or web;.
said-elements including a traveling endless .belt arranged for contact (preferably ex-' tended contact) with the sheet or web while on its carrier, means being employed for applying the anti-offset powder in regulable quantities to the endless belt for transfer.
thereby onto the freshly printed side of the sheet or web. I
' A practical embodiment of my invention is represented in the accompanying drawin s, in which ig. 1 represents in side elevation so much of a printing press as includes my improved anti-offset mechanism.
Fig. 2 represents a longitudinal vertical section through the same.
The rotary carrier is herein shown as a sheet carrying cylinder 1, provided with sheet grippers 2, the shaft 3 of which cylinder is suitably mounted in the frame 4.
The endless belt 5 passes around the drive roll 6, the idler roll 7 and the belt tightener roll 8 and underneath thebfl'set powder applying roll 9. These rolls are all suitably mounted in the frame 4 and the rolls 7 and 8 are so arranged as to cause'the endless belt 5 to have an extended contact with the freshly printed side of the sheet on the carrier.
The anti-oflset'powder supply fountain is denoted by 10 and its roll 11 is arranged in position to transfer the anti-offset powder to the roll 9, which latter roll is provided with a cover of fabric, such, for instance as felt, pile fabric and the like.
An adjustable doctor knife 12 is mounted 'in the fountain 10 imposition to regulate the printed side of the amountof anti-offset powder Jtaken b the fountain roll 11 for transfer to the, abr ic covered roll 9. Thisroll 9 applies the antiinvention; hence, I
15, 16 and 17 leading from thecarrier gear Itwill be seen that by this arrangementl am enabled toiapply the anti-offset owder.
to the, freshly, printed side of the s eet or web in regulable quantities so that all waste of the powder may be eliminated and also so that too much powder need not be applied to llthe'freshly printed side of the sheet or we It is evident that various changes. may be resorted to in the constructiom'form and arrangement of the several arts without departing from the s irit' an scope of my 0 not intend to limit myself to the particular embodiment hereinshown and described but What I claim 'is: I 1. A rotary carrier for a freshly printed sheet or web, a traveling endless belt arranged freshly printed outer side oft e sheet or web.
sheet or' web, a-- traveling endless belt arwhi e on the carrier, and a fabric'covered roll for applying anti-offset powderto the 3. A rotary carrier for a freshly printed ran edifor contact with the'sheet or webbelt for transfer thereby onto-the freshly printed outer side of the sheet or web, the
carrier, belt and roll being driven at the. I
same surface speed. r
4'. A rotary carrier-for a freshlyprinted sheet or web, a traveling endless belt arranged for extended contact with the sheet or web'whilexon the carrier, and a fabric covered roll for applying anti-offset powder to the belt for transfer thereby onto the freshly. printed outer side of the sheet or web,-the carrier, belt and roll being driven' at the same surface speed.
5, 'A rotary'carrier-for a freshly printed sheet or web, a traveling'endless belt arranged for contact with the sheet or web while on the carrier, an anti-offset powder supply fountain, afountain roll, and afabric covered roll engaged thereby for applying the anti-ofi'set powder to the belt for transfer thereby onto the freshly printed outer side of the sheet or web.
6. A rotary carrier for a freshly printed sheet or web, a traveling endless belt arranged for extended contact with the sheet or web while on the carrier, an anti-offset powder supply fountain, a fountain roll, and
a fabric covered roll engaged thereby for applying the anti-offset powder to'the belt 'for transfer thereby onto the freshly printed outer side of the sheet or web.
7 A rotary carrier for a freshly printed sheet or web, a traveling endless belt arranged for contact with the sheet orweb while on the carrier, an anti-offset powdersupply fountain, a fountain roll,and a faba fabric covered roll engaged thereby for applying the anti-offset powder to the belt for transfer thereby onto the freshly printed outer side of the sheet or web, the carrier, belt and rolls being driven at the same surface speed.
In testimony, that I claim thevforegoing as my invention, I have signed my name this 27th day of February, A. D. 1925.
RICHARD J. GREENWAY.
US12842A 1925-03-03 1925-03-03 Antioffset mechanism for printing presses Expired - Lifetime US1638572A (en)

Priority Applications (1)

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US12842A US1638572A (en) 1925-03-03 1925-03-03 Antioffset mechanism for printing presses

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US12842A US1638572A (en) 1925-03-03 1925-03-03 Antioffset mechanism for printing presses

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US1638572A true US1638572A (en) 1927-08-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5797326A (en) * 1994-12-20 1998-08-25 Heidelberger Druckmaschinen Ag Method for applying spacing material to a printed sheet of paper, and a sheet-fed printing press equipped for performing the method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5797326A (en) * 1994-12-20 1998-08-25 Heidelberger Druckmaschinen Ag Method for applying spacing material to a printed sheet of paper, and a sheet-fed printing press equipped for performing the method

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